Screenshots

Yapan terminal configuration

Yapan by default is configured to use konsole, you can change this by changing the command "Update command to call" in:
Settings -> Package manager
Do not erase "%1", it is replaced by "Update" command.

I strong suggest to not close the terminal when update is finished automatically, some updates require more commands.

sudo configuration

Not needed anymore default configuration is using fakeroot now

You need to give passwordless sudo access to the "pacman -Sy" command or other package manager of your taste, for the user that will be running Yapan. To give access specifically for that command you should edit your /etc/sudoers file to include the following line:

%wheel ALL = NOPASSWD: /usr/bin/pacman -Sy

or

%wheel ALL = NOPASSWD: /usr/bin/yaourt -Sy

for example.

Which will give access to said command to every user under the "wheel" group. A similar configuration can be achieved for just a specific user replacing the "%wheel" by the name of your user.